d=2 (b=1): ambient real dim 36, 4d = 8 equations: max residual 3.5e-13 ; Jacobian ranks at 12 projected points: [8]
d=4 (b=2): ambient real dim 60, 4d = 16 equations: max residual 8.2e-14 ; Jacobian ranks at 12 projected points: [16]
d=6 (b=3): ambient real dim 84, 4d = 24 equations: max residual 3.1e-13 ; Jacobian ranks at 12 projected points: [24]
